Abstract: A vehicle includes an electric chassis and a vehicle body to be assembled, and the vehicle body is configured to be connected to the electric chassis. A vehicle final assembly line includes: an automatic guided vehicle AGV, configured to convey the electric chassis to a marriage station; and a vehicle body positioning device, configured to position the vehicle body on the electric chassis to connect the vehicle body to the electric chassis at the marriage station. The AGV is further configured to: convey the vehicle body and the electric chassis that are connected to each other to a plurality of assembly stations in sequence so as to complete assembly of the vehicle at the plurality of assembly stations. The vehicle final assembly line further includes an end-of-line device, configured to separate the assembled vehicle from the AGV at the end-of-line station, to cause the assembled vehicle to leave the line.

Abstract: A vehicle includes an electric chassis provided with a navigation device and a vehicle body to be connected to the electric chassis. The navigation device is configured to control the electric chassis to travel according to a predetermined path. A vehicle final assembly line includes: a vehicle body positioning device, configured to position the vehicle body on the electric chassis to connect the vehicle body to the electric chassis at a marriage station when the navigation device controls the electric chassis to travel to the marriage station according to the predetermined path, and control the vehicle body and the electric chassis that are connected to each other to travel to a plurality of assembly stations in sequence according to the predetermined path so as to complete assembly of the vehicle at the plurality of assembly stations, and the assembled vehicle leaves the line at an end-of-line station.

Abstract: A remote intelligent active drilling pressure control system and method. The system includes a drilling pump, a rotary blowout preventer, a ground simple throttle control manifold, a wellhead back pressure compensation manifold, a graded filling device, a downhole storage-type pressure measuring device, a ground multi-parameter online monitoring system, a drilling hydraulic calculation system, an MPD intelligent control platform and a remote monitoring and control system. The present invention provides a wellbore pressure control thought of “plugging and control integration”, improves the pressure resistance of a formation by circularly plugging while drilling, realizes active control of a wellbore pressure, effectively broadens a “drilling safety density window” of the formation, and reduces the requirements on the pressure control precision of a wellbore pressure control device.

Abstract: A method for preparing heat-conductive cement slurry for well cementation includes the following steps: S1, uniformly mixing sodium 1-butanesulfonate, sodium dodecyl diphenyl ether disulfonate and polyvinylpyrrolidone to obtain an admixture; S2, dissolving the admixture in deionized water and stirring to obtain a dispersant solution; S3, adding graphite to the dispersant solution and stirring to obtain a graphite dispersion; S4, stirring cement and deionized water in a slurry cup to obtain cement slurry; and S5, mixing and stirring the graphite dispersion and the cement slurry to obtain the heat-conductive cement slurry. The heat-conductive cement slurry can effectively improve the heat conductivity coefficient of set cement, and significantly improve the heat conductivity of the set cement, and has a broad market application prospect.

Abstract: A controllable downhole drilling and completion tool separating device and their method of use are provided. The device includes an upper mandrel connector, an outer sleeve, a claw clamp sleeve, a claw clamp locking ring, a mandrel sleeve, a lower connector, a piston ring and a pressure bearing ball. The upper end of the lower connector is on the outer side of the upper connector in a sleeving mode. A first annular cavity is between the lower connector and the upper connector. The piston ring is on the outer side of the upper connector in a sleeving mode and located in the first annular cavity. The claw clamp sleeve and the outer sleeve are sequentially arranged on the outer side of the upper connector in a sleeving mode. A second annular cavity is communicated with the first annular cavity and formed between the claw clamp sleeve and the upper connector.

Abstract: Disclosed is an image enhancement method, including: obtaining an image adjustment parameter; converting first image data to be processed into second image data; adjusting the luminance data to obtain adjusted luminance data, updating the luminance adjustment parameter when that the adjusted luminance data does not meet a preset luminance enhancement condition, and based on an updated luminance adjustment parameter, continuing to adjust the adjusted luminance data until final adjusted luminance data meets the luminance enhancement condition; adjusting the chroma data to obtain adjusted chroma data, updating the chroma adjustment parameter when that the adjusted chroma data does not meet a preset chroma enhancement condition, and based on an updated chroma adjustment parameter, continuing to adjust the adjusted chroma data until final adjusted chroma data meets the chroma enhancement condition; and performing image color dimension conversion on the luminance data and the chroma data to obtain third image data.

Abstract: The disclosure provides a battery conveying system, a battery swapping station, and a battery swapping method. The battery conveying system includes a first conveying mechanism and a second conveying mechanism. When the first conveying system and the second conveying system are located at a docking position, a first support structure of the first conveying system is perpendicularly aligned with a channel structure of the second conveying system, such that when the first support structure of the first conveying system is being lifted or lowered relative to a mechanism body, the first support structure can run through the channel structure, such that a support surface of the first support structure is higher or lower than a support surface of the second support structure in a horizontal direction, so as to allow a battery to be transported between the first conveying system and the second conveying system.

Abstract: A controllable downhole drilling and completion tool separating device and their method of use are provided. The device includes an upper mandrel connector, an outer sleeve, a claw clamp sleeve, a claw clamp locking ring, a mandrel sleeve, a lower connector, a piston ring and a pressure bearing ball. The upper end of the lower connector is on the outer side of the upper connector in a sleeving mode. A first annular cavity is between the lower connector and the upper connector. The piston ring is on the outer side of the upper connector in a sleeving mode and located in the first annular cavity. The claw clamp sleeve and the outer sleeve are sequentially arranged on the outer side of the upper connector in a sleeving mode. A second annular cavity is communicated with the first annular cavity and formed between the claw clamp sleeve and the upper connector.

Abstract: Embodiments of this disclosure include an interface display method and apparatus. The method may include displaying a multi-task floating window in front of a user interface of the terminal and displaying a task floating window set in response to receiving a trigger signal corresponding to the multi-task floating window. The task floating window set may include at least one single-task floating window. One single-task floating window may be corresponding to one task. The method may further include receiving a selection instruction corresponding to a first single-task floating window in the task floating window set and displaying a user interface of a first task corresponding to the first single-task floating window.

Abstract: The disclosure provides a battery swap platform, a battery swap station, and a battery swap method. The battery swap platform includes: a parking mechanism configured to park a vehicle; an accommodating mechanism, which is arranged below the vehicle parked on the parking mechanism, and which has an opening; an opening and closing mechanism configured to open or close the opening of the accommodating mechanism; and a battery mounting/dismounting mechanism arranged in the accommodating mechanism and capable of being lifted or lowered relative to the accommodating mechanism, wherein when the opening and closing mechanism opens the opening of the accommodating mechanism, the battery mounting/dismounting mechanism can be lifted relative to the accommodating mechanism to extend out of the accommodating mechanism through the opening, and perform a battery mounting/dismounting operation for the vehicle.

Abstract: The disclosure provides a battery conveying system and a battery swap station comprising same. The battery conveying system comprises a battery swap platform, a battery demounting and mounting mechanism, and a battery conveying mechanism. The battery swap platform has an accommodating structure, a battery demounting and mounting area above the accommodating structure, and a battery transfer area inside the accommodating structure. The demounting and mounting structure is located in the accommodating structure and can be lifted or lowered relative to the accommodating structure such that a battery is transferred between the battery demounting and mounting area and the battery transfer area. The battery conveying mechanism extends from the battery transfer area to the outside of the accommodating structure via a side portion of the accommodating structure, and is configured to convey the battery between the battery transfer area and the outside of the accommodating structure.

Abstract: The disclosure provides a battery swap platform, a battery swap station, and a battery swap method. The battery swap platform includes a parking mechanism, a battery mounting/dismounting mechanism, and a battery temporary storage mechanism. The battery mounting/dismounting mechanism can dismount a battery from a vehicle parked on the parking mechanism and deliver the dismounted battery to the battery temporary storage mechanism for temporary storage, or obtain a battery from the battery temporary storage mechanism and mount the battery on the vehicle parked on the parking mechanism. In this way, in the battery swap platform and the battery swap station provided in the disclosure, the provision of the battery temporary storage mechanism can shorten the battery transport duration, thereby reducing the total time taken for vehicle battery swap.

Abstract: The disclosure provides a battery swap platform, a battery swap station, and a battery swap method. The battery swap platform includes a parking mechanism, an accommodating mechanism, and an opening and closing mechanism. The accommodating mechanism is arranged below a vehicle parked on the parking mechanism and has an opening, and the opening and closing mechanism is arranged on the accommodating mechanism. When the opening and closing mechanism is in an open state, the opening of the accommodating mechanism can be opened. When the opening and closing mechanism is in a closed state, the opening of the accommodating mechanism can be closed, and the opening and closing mechanism and the parking mechanism form a vehicle passage path for allowing the vehicle to enter or leave the parking mechanism.

Abstract: A remote intelligent active drilling pressure control system and method. The system includes a drilling pump, a rotary blowout preventer, a ground simple throttle control manifold, a wellhead back pressure compensation manifold, a graded filling device, a downhole storage-type pressure measuring device, a ground multi-parameter online monitoring system, a drilling hydraulic calculation system, an MPD intelligent control platform and a remote monitoring and control system. The present invention provides a wellbore pressure control thought of “plugging and control integration”, improves the pressure resistance of a formation by circularly plugging while drilling, realizes active control of a wellbore pressure, effectively broadens a “drilling safety density window” of the formation, and reduces the requirements on the pressure control precision of a wellbore pressure control device.

Abstract: The present invention discloses an intelligent recognition method for while-drilling safety risks based on a convolutional neural network. The method includes the following steps: 1, processing while-drilling safety risk parameter features and data, and establishing a correlation analysis model for monitoring-while-drilling parameters by using a Pearson coefficient correlation analysis method; 2, processing while-drilling safety monitoring data, analyzing a time span of each sample, constructing training sample data and test sample data, and preprocessing the samples; 3, designing a while-drilling safety risk recognition network structure; and 4, recognizing while-drilling safety risks by the trained safety risk recognition network.

Abstract: Embodiments of this disclosure include an interface display method and apparatus. The method may include displaying a multi-task floating window in front of a user interface of the terminal and displaying a task floating window set in response to receiving a trigger signal corresponding to the multi-task floating window. The task floating window set may include at least one single-task floating window. One single-task floating window may be corresponding to one task. The method may further include receiving a selection instruction corresponding to a first single-task floating window in the task floating window set and displaying a user interface of a first task corresponding to the first single-task floating window.

Abstract: After a user logs in to a client, a first request of the user is sent to a server, and after the first request is authenticated, a communication connection between the client and the server is established; a system message sent by the server is received in a user login interface to which the user has logged in; the system message is generated by the server to contain at least text-format information capable of being displayed at the client.